Syntenic Vertebrate Wnt genes

There are several cases of closely linked and syntenic Wnt genes in the
human and mouse genomes, listed here. Some of the Drosophila orthologs,
wingless, DWnt10 and DWnt6, are also linked. See (Nusse,
2001; PDF) for a discussion of the
evolutionary implications.

Note that in Drosophila, wingless, DWnt10 and DWnt6 are
immediately adjacent, while DWnt4 (the ortholog of Wnt9; Qian
et al (2003) ) is very close to that cluster.